21831147

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^2$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 36665440

約数和(自身を除く): 14834293

約数列:

[1, 3, 9, 13, 27, 37, 39, 41, 111, 117, 123, 333, 351, 369, 481, 533, 999, 1107, 1443, 1517, 1599, 1681, 4329, 4551, 4797, 5043, 12987, 13653, 14391, 15129, 19721, 21853, 40959, 45387, 59163, 62197, 65559, 177489, 186591, 196677, 532467, 559773, 590031, 808561, 1679319, 2425683, 7277049, 21831147]

約数ペア:

[(1, 21831147), (3, 7277049), (9, 2425683), (13, 1679319), (27, 808561), (37, 590031), (39, 559773), (41, 532467), (111, 196677), (117, 186591), (123, 177489), (333, 65559), (351, 62197), (369, 59163), (481, 45387), (533, 40959), (999, 21853), (1107, 19721), (1443, 15129), (1517, 14391), (1599, 13653), (1681, 12987), (4329, 5043), (4551, 4797)]